Stewart, 32, of Forest Gate, east London, has denied robbery.
Yorke worked as a medium for many years from Forest Gate, east London.
The child was found in the bathroom of their Forest Gate flat with 101 injuries including deep cuts and bruising about his body and face.
He died at Forest Gate, Essex, on 28 April 1917.
They moved to the St. Antony's area of Forest Gate in 1877.
Forest Gate in particular had a high population of clerical and professional workers.
He returned to London in 1930 and was rabbi at Forest Gate until his retirement in 1951.
He described how one night in Forest Gate a bus laden with people going home from work was hit.
Alper was born in Forest Gate, east London, the son of a hairdresser.
Later that year he married Elizabeth Thatcher at Forest Gate.